<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>

  <script>

    const obj = {
      // [表达式]
      [1 + 1]: 'zs'
    }


    function getObj(str) {
      return {
        [str]: "zs"
      }

    }

    const result = getObj("123123")
    console.log('result  ----->  ', result);

  </script>

</body>

</html>